| 摘要 |
<p>PURPOSE:To decrease the slip of a clutch and prevent its temperature rise, by increasing a control current in proportion to the temperature rise of the clutch. CONSTITUTION:A voltage detector circuit 51 and current detector circuit 52 detect the voltage and current of a clutch coil 44, then an arithmetic circuit 53 calculates a resistance value of the coil 44 from these signals. A resistance value signal is converted to a temperature change by a corrector circuit 54 and transmitted to a proportional pluse generator circuit 45 to adjust a clutch current by the method of pulse width control. Since temperature is measured by the coil voltage and current then the coil current is controlled, a time for half clutch operation can be decreased in accordance with the temperature rise, further the temperature can be prevented from increasing.</p> |
